Event Notification Report for January 29, 2023
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
01/28/2023 - 01/29/2023
EVENT NUMBERS
56387
56387
Part 21
Event Number: 56387
Rep Org: Paragon Energy Solutions
Licensee: Paragon Energy Solutions
Region: 4
City: Forth Worth State: TX
County:
License #:
Agreement: Y
Docket:
NRC Notified By: Richard Knott
HQ OPS Officer: Karen Cotton-Gross
Licensee: Paragon Energy Solutions
Region: 4
City: Forth Worth State: TX
County:
License #:
Agreement: Y
Docket:
NRC Notified By: Richard Knott
HQ OPS Officer: Karen Cotton-Gross
Notification Date: 03/03/2023
Notification Time: 12:51 [ET]
Event Date: 01/29/2023
Event Time: 00:00 [CST]
Last Update Date: 03/31/2023
Notification Time: 12:51 [ET]
Event Date: 01/29/2023
Event Time: 00:00 [CST]
Last Update Date: 03/31/2023
Emergency Class: Non Emergency
10 CFR Section:
21.21(d)(3)(i) - Defects And Noncompliance
10 CFR Section:
21.21(d)(3)(i) - Defects And Noncompliance
Person (Organization):
Vossmar, Patricia (R4DO)
Part 21/50.55 Reactors, - (EMAIL)
Carey, Bickett (R1DO)
Vossmar, Patricia (R4DO)
Part 21/50.55 Reactors, - (EMAIL)
Carey, Bickett (R1DO)
EN Revision Imported Date: 4/3/2023
EN Revision Text: PART 21 - DEFECT IDENTIFIED IN AUTOMATIC TRANSFER SWITCH
The following information was provided by Paragon Energy Solutions, LLC via email:
"Pursuant to 10 CFR 21.21(d)(3)(i), Paragon Energy Solutions, LLC is providing initial notification of the identification of a defect potentially associated with a substantial safety hazard.
"The subject Automatic Transfer Switches contain Mar-Bal bus insulators. Based on Paragon testing performed, the insulators may have developed stress cracking due to over tightening of required mounting hardware during the assembly process which was not detected by inspection at Paragon. Stress cracks in the insulators could degrade the structural integrity of the automatic transfer switch to withstand seismic conditions which could potentially cause a substantial safety hazard.
"Only one customer, Talen Energy-Susquehanna, is affected by this issue. Serial numbers of the potentially effected units (QTY 4): 351029663-1 through 351029663-4.
"It is recommended the licensee inspect the insulators for the supplied automatic transfer switches for stress cracking and contact Paragon for any needed assistance to resolve any deficiencies identified.
"The date of discovery was 1/29/2023, and the date of the Part 21 Reportability determination was 3/2/2023. Formal notification will be submitted on or before 3/31/2023."
Point of Contact:
Richard Knott
Vice President Quality Assurance
Paragon Energy Solutions
817-284-0077
rknott@paragones.com
* * * UPDATE ON 03/31/23 AT 1607 EDT FROM PARAGON ENERGY SOLUTIONS TO BILL GOTT * * *
Paragon Energy Solutions submitted their final report in accordance with 10CFR 21.21(d)(4).
Paragon recommends inspection of the 4 automatic transfer switches supplied to Talen Susquehanna for insulator cracking at the next regularly scheduled maintenance period and replacement of any insulators found to exhibit stress cracking.
Notified R1DO (Schroeder) and Part 21/50.55 Group via email.
EN Revision Text: PART 21 - DEFECT IDENTIFIED IN AUTOMATIC TRANSFER SWITCH
The following information was provided by Paragon Energy Solutions, LLC via email:
"Pursuant to 10 CFR 21.21(d)(3)(i), Paragon Energy Solutions, LLC is providing initial notification of the identification of a defect potentially associated with a substantial safety hazard.
"The subject Automatic Transfer Switches contain Mar-Bal bus insulators. Based on Paragon testing performed, the insulators may have developed stress cracking due to over tightening of required mounting hardware during the assembly process which was not detected by inspection at Paragon. Stress cracks in the insulators could degrade the structural integrity of the automatic transfer switch to withstand seismic conditions which could potentially cause a substantial safety hazard.
"Only one customer, Talen Energy-Susquehanna, is affected by this issue. Serial numbers of the potentially effected units (QTY 4): 351029663-1 through 351029663-4.
"It is recommended the licensee inspect the insulators for the supplied automatic transfer switches for stress cracking and contact Paragon for any needed assistance to resolve any deficiencies identified.
"The date of discovery was 1/29/2023, and the date of the Part 21 Reportability determination was 3/2/2023. Formal notification will be submitted on or before 3/31/2023."
Point of Contact:
Richard Knott
Vice President Quality Assurance
Paragon Energy Solutions
817-284-0077
rknott@paragones.com
* * * UPDATE ON 03/31/23 AT 1607 EDT FROM PARAGON ENERGY SOLUTIONS TO BILL GOTT * * *
Paragon Energy Solutions submitted their final report in accordance with 10CFR 21.21(d)(4).
Paragon recommends inspection of the 4 automatic transfer switches supplied to Talen Susquehanna for insulator cracking at the next regularly scheduled maintenance period and replacement of any insulators found to exhibit stress cracking.
Notified R1DO (Schroeder) and Part 21/50.55 Group via email.